Incidence and Risk Factors for Psoriasis in the General Population

Abstract

Psoriasis is a chronic, immunologically based, inflammatory disease of the skin and joints, which has been estimated to affect 1% to 3% of the population. The estimated prevalence rates are mostly derived from general population health surveys (rather than from disease-specific studies)^1-6 and from specific registries.^7,8 Studies providing incidence rates of psoriasis are scarce. A study estimated an incidence rate of 60.4 per 100 000 person-years in a US general population.⁹